Sekai vs Theodore

Baby Name Comparison — 2026

Sekai

Boy #3,312 Most Popular 2 Syllables

Meaning

"world, the whole world"

Origin: Japanese

Cultural Roots

Japanese Zimbabwean/Shona

Quick Stats

Popularity Rank
#3,312
Total SSA Count
36
Syllables
2
Formality
Moderate
Nicknames
Kai, Sek

Playground Safety Score

✓ All Clear
Full profile for Sekai →

Popularity Comparison

Sekai Rank #3,312
Theodore Rank #4

Theodore is more popular, ranked #4 vs #3312 for Sekai.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Sekai ___

  • Sekai James
  • Sekai Lee
  • Sekai Ryu
  • Sekai Kenji
  • Sekai Taro
  • Sekai Hiro

Theodore ___

  • Theodore James
  • Theodore William
  • Theodore Alexander
  • Theodore John
  • Theodore Henry
  • Theodore Arthur

Sibling Name Ideas

Names that pair well as siblings.

If you choose Sekai

Kai Hana Riko Zuri Amara

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Sekai or Theodore more popular?

Theodore is more popular, ranked #4 compared to Sekai at #3312 in the United States.

What do Sekai and Theodore mean?

Sekai means "world, the whole world" (Japanese origin). Theodore means "divine gift" (Greek origin).

Are Sekai and Theodore boy or girl names?

Sekai is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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← Full profile: Sekai ← Full profile: Theodore Browse all baby names